The following image is of a Siamese cat - VCE - SSCE Biology - Question 22 - 2011 - Paper 1
Question 22
The following image is of a Siamese cat.
The colour produced in the fur of a Siamese cat is under the control of a tyrosinase enzyme that is sensitive to particular... show full transcript
Worked Solution & Example Answer:The following image is of a Siamese cat - VCE - SSCE Biology - Question 22 - 2011 - Paper 1
Step 1
A. Siamese kittens have dark fur over their bodies when they are born.
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Answer
This statement is incorrect as Siamese kittens are typically born with white fur and develop their coloration later.
Step 2
B. Siamese cats that live outside a house show an increase in pigment during summer.
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Answer
This statement is true because exposure to warmer temperatures helps activate the tyrosinase enzyme, leading to increased pigmentation.
Step 3
C. Siamese cats that live inside a house in winter have darker fur than those that live outside.
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Answer
This statement is likely incorrect as cats exposed to warmer indoor conditions would not produce as much pigment.
Step 4
D. Siamese cats that live outside in winter have darker fur than Siamese cats in tropical regions.
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Answer
This statement is true, as outdoor Siamese cats in cooler climates will have darker fur due to lower temperatures stimulating pigment production, unlike those in consistently warmer tropical regions.
